{"$schema":"https://verifymcp.io/schemas/trust-report.json","schemaVersion":1,"license":{"name":"CC BY-NC 4.0","url":"https://creativecommons.org/licenses/by-nc/4.0/"},"generatedAt":"2026-11-05T17:25:59.120Z","url":"https://verifymcp.io/servers/pipeworx-io-carbon/pipeworx-mcp-carbon","markdownUrl":"https://verifymcp.io/servers/pipeworx-io-carbon/pipeworx-mcp-carbon.md","server":{"slug":"pipeworx-io-carbon","name":"Carbon","registryName":"io.github.pipeworx-io/carbon","description":"Carbon MCP — UK Carbon Intensity API (free, no auth)","registryStatus":"active","deletedAt":null,"statusMessage":null,"liveness":"live","publisher":{"class":"unknown","claimed":false}},"component":{"slug":"pipeworx-mcp-carbon","type":"npm","identifier":"@pipeworx/mcp-carbon","withdrawn":false,"url":"https://verifymcp.io/servers/pipeworx-io-carbon/pipeworx-mcp-carbon","version":"0.2.1","transport":"stdio","scoredAt":"2026-11-05T06:24:53.114Z"},"score":{"total":84,"tier":"high trust","status":"scored","weekDelta":3,"history":[{"date":"2026-11-05","total":84},{"date":"2026-11-04","total":84},{"date":"2026-11-03","total":83},{"date":"2026-11-02","total":83},{"date":"2026-11-01","total":82},{"date":"2026-10-31","total":67},{"date":"2026-10-30","total":81},{"date":"2026-10-29","total":81}]},"categories":[{"name":"Supply Chain Security","score":100,"verdict":"pass","reasons":["No malware found by supply-chain analysis.","No known CVEs affecting this package version or its production dependencies.","No install/post-install scripts declared.","No production dependencies, so there is no dependency health to assess."],"codes":[{"code":"supplychain.malware_clean","args":{}},{"code":"cve.none","args":{}},{"code":"installscript.none","args":{}},{"code":"dephealth.no_dependencies","args":{"deps":"0","unhealthy":"0"}}]},{"name":"Provenance & Transparency","score":97,"verdict":"fail","reasons":["Source repository is publicly reachable at the declared URL.","Cryptographically verified build provenance (signed, bound to pipeworx-io/mcp-carbon).","Clear OSI-approved license (MIT).","Actively maintained (last published 5 days ago).","Disclosure check failed: no security disclosure policy was found in the source repository."],"codes":[{"code":"provenance.repo_verified","args":{}},{"code":"provenance.verified","args":{"repo":"pipeworx-io/mcp-carbon"}},{"code":"license.osi","args":{"spdx":"MIT"}},{"code":"maintenance.recent","args":{"age_days":"5"}},{"code":"disclosure.absent","args":{}}]},{"name":"Schema Quality & AI Usability","score":76,"verdict":"fail","reasons":["AI-judged instruction clarity (good).","Tool/resource definitions use about 419 tokens (~83/item across 5 items; 5 tools + 0 resources), lean.","Usage-examples check failed: none of the tools include examples."],"codes":[{"code":"schema.ai_quality","args":{"band":"good"}},{"code":"schema.footprint_lean","args":{"avg":"83","items":"5","tools":"5","tokens":"419","resources":"0"}},{"code":"schema.examples_absent","args":{}}]},{"name":"Stability & Change Management","score":23,"verdict":"partial","reasons":["Stability observed for 7 of 30 days with no destabilising changes; credit accrues until the full window elapses."],"codes":[{"code":"stability.building_history","args":{"days":"7"}}]},{"name":"Tool Coverage","score":100,"verdict":"pass","reasons":["100% of tools have a non-trivial description (not blank, and not just the tool's name).","100% of tool parameters carry a description."],"codes":[{"code":"toolquality.descriptions","args":{"pct":"100"}},{"code":"toolquality.param_docs","args":{"pct":"100"}}]},{"name":"Tool Safety","score":100,"verdict":"pass","reasons":["No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.","We read all 5 captured tool definition(s), and no name or description among them implies an irreversible operation.","An AI judge read all 6 captured unit(s) of tool text and found none that tries to manipulate the model reading it."],"codes":[{"code":"toolsafety.injection_clean","args":{}},{"code":"toolsafety.destructive_none","args":{"tools":"5"}},{"code":"toolsafety.manipulation_clean","args":{"units":"6","judged":"6"}}]},{"name":"Capabilities","score":100,"verdict":"pass","reasons":["Implements a supported MCP spec version (2025-11-25); 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Use to understand real-time grid energy mix.","inputs":[],"outputs":[],"hasOutputSchema":false,"hasExamples":false,"tokenEstimate":44},{"name":"get_regional_intensity","title":null,"description":"Carbon intensity (forecast gCO2/kWh + index band) and generation mix for a specific Great Britain region. Pass \"postcode\" (UK outcode — first half of a postcode, e.g. \"RG10\") or \"regionid\" (1–17, e.g. 13 = London). Omit both for all regions at the current half-hour. Regional figures are forecast-only.","inputs":[{"name":"postcode","type":"string","required":false,"description":"UK outcode (first part of a postcode), e.g. \"RG10\". 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